Mr. Stacy From: Seattle, WA Proud to be a Cloudy Nights Member since 9/15/02* Celestron NS11 GPS - Stellarvue Raptor 90mm APO* Vixen Ultima 8X56 - Fujinon 10X50 FMT-SX - Nikon 7X50 ProStar - Vanguard Endeavor ED 8X42 - Nikon Action Ex. 7X35More cowbell please!
Quote:What color are your eye pupils?Were on the globe did your ancestors live?How goes it with your eye pupil DNA?
Quote:WELLLLLLLLL...I have been a CN member on and off for seven or so years. I have both binoculars and scopes. During those seven years I have often read threads about the terrors of the deep--the 7mm exit pupil. Well, all of this optical savvy and graphs and charts and big words are nice. I tip my hat to the optical engineers. HOWEVER...During all of these warnings about the terrors of the deep--the 7mm exit pupil--I continue to grab binoculars (and scope/eyepiece configurations) that give me large exit pupils for my large Scottish baby blue eye pupils. And I must say that I am not sorry--I just see better through binoculars and scope/eyepiece configurations with large exit pupils.What color are your eyes?My eye doctor said she has seen in her patients a tendency for blue-eyed eye pupils of North European descent (DNA) to have larger dark-adapted eye pupils; and her patients with baby blues retain their oversized dark-adapted eye pupils to a much older age than her patients with non-blue eyes. What color are your eye pupils?Were on the globe did your ancestors live?How goes it with your eye pupil DNA?SOOOOOOO...Do my large eye pupils mean that I come from good Scottish Clan bloodlines? Or, as a result of a head injury I suffered at age 14, (or some other biological mishap), do I frequently suffer from an optical condition called Mydriasis? Did Edward Emerson Bernard, reputed to have one of the best observing eyes in the history of recent astronomers, suffer from Mydriasis?It is not always about optics. Sometimes it is very much about genetics and biology.
Quote:My eye doctor said she has seen in her patients a tendency for blue-eyed eye pupils of North European descent (DNA) to have larger dark-adapted eye pupils
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Quote:I'm not at all convinced that there's a significant correlation between pupil size and night vision, astronomical or otherwise.
the very source and font of day is dashed with isles of wandering night--Tennyson
Quote: Pupil size=aperture=light gathering capacity.
Quote: I was just trying to make the point that dark adaptation is a retinal event independent of pupil dilation. The point about cataracts is well taken as well. I have read that the lens of a 65 year old transmits only one third the light transmitted by the lens of a child. By the time we get to the stage of life where we are fascinated by the night sky, we've already lost some of our ability to see it.
Quote: I am intrigued by the whole cataract thing and general loss of transmission... Jon
Oregon coast 20x120
Quote:Eye care and regular check ups are more important than DNA, heritage etc in my opinion. As my eyes aged regular check ups caught early I,m glad to say Glaucoma, retinal tears and cateracts, DA.
Quote:My daughter, who is from India, can't understand why people want to wear sunglasses. She can also look at a partial solar eclipse and tell you the phase -- as can several other people from India whom I know. I can't look straight at the Sun even if I want to.
ToddBrunton Eterna 15x51 • Fujinon 10x50 FMT-SX • Garrett Optical Signature Series 15x70Nikon 12x50 Action Extreme • Oberwerk 15x60 • Oberwerk 20x80 StandardPentax 20x60 PCF WP II • Celestron Skymaster 20x80 (Reanimated by Dr. Suddarth)Orion Paragon Plus Mount and Paragon XHD TripodManfrotto 562B Monopod adapted with Manfrotto 222 "Joystick" Head